Question

作为Google的BigQuery平台的初学者，我发现它与MySql的语法几乎相似。但是，我收到了一个问题，我的查询中没有找到我正在执行的内部联接两侧的列。

以下示例查询：

SELECT
  base_account.random_table_name_transaction.context_id,
  base_account.random_table_name_transaction.transaction_id,
  base_account.random_table_name_transaction.meta_recordDate,
  base_account.random_table_name_transaction.transaction_total,
  base_account.random_table_name_transaction.view_id,
  base_account.random_table_name_view.user_id,
  base_account.random_table_name_view.view_id,
  base_account.random_table_name_view.new_vs_returning,
  base_account.random_table_name_experience.view_id,
  base_account.random_table_name_experience.experienceId,
  base_account.random_table_name_experience.experienceName,
  base_account.random_table_name_experience.variationName,
  base_account.random_table_name_experience.iterationId,
  base_account.random_table_name_experience.isControl
FROM
  [base_account.random_table_name_transaction] transactiontable
INNER JOIN
  base_account.random_table_name_view viewtable
ON
  transactiontable.view_id=viewtable.view_id
INNER JOIN
  [base_account.random_table_name_experience] experiencetable
ON
  viewtable.view_id=experiencetable.view_id
WHERE experiencetable.experienceId = 96659 or experiencetable.experienceId = 96660

在这种情况下，当我在BigQuery平台中运行它时，在运行查询几秒后，我返回一个错误： "Error: Field 'base_account.random_table_name_experience.experienceId' not found on either side of the JOIN"。

但是，当我运行相同的查询时，我会执行SELECT *查询，它会正确执行并返回我期望的数据。

我的语法是否缺少其失败的原因？我可以确认我试图返回的每一列确实存在于每个受尊重的表中。

Answer 1

确保使用standard SQL进行查询，以避免遗留SQL的一些令人惊讶的别名规则，并获取更多信息性错误消息。您的查询将是：

#standardSQL
SELECT
  base_account.random_table_name_transaction.context_id,
  base_account.random_table_name_transaction.transaction_id,
  base_account.random_table_name_transaction.meta_recordDate,
  base_account.random_table_name_transaction.transaction_total,
  base_account.random_table_name_transaction.view_id,
  base_account.random_table_name_view.user_id,
  base_account.random_table_name_view.view_id,
  base_account.random_table_name_view.new_vs_returning,
  base_account.random_table_name_experience.view_id,
  base_account.random_table_name_experience.experienceId,
  base_account.random_table_name_experience.experienceName,
  base_account.random_table_name_experience.variationName,
  base_account.random_table_name_experience.iterationId,
  base_account.random_table_name_experience.isControl
FROM
  `base_account.random_table_name_transaction` transactiontable
INNER JOIN
  base_account.random_table_name_view viewtable
ON
  transactiontable.view_id=viewtable.view_id
INNER JOIN
  `base_account.random_table_name_experience` experiencetable
ON
  viewtable.view_id=experiencetable.view_id
WHERE experiencetable.experienceId = 96659 OR experiencetable.experienceId = 96660;

请注意，我所做的唯一更改是将#standardSQL放在开头（启用标准SQL）并使用反引号而不是括号来转义表名。

＆＃34;错误：字段＆＃39; [已删除] .field_id＆＃39;在JOIN＆＃34;，Google BigQuery

1 个答案: